Valve-spring release.



W. S. PORTER. VALVE SPRING RELEASE. APPLICATION HLEVD lULY l4. I9l-6- I Patent ed Dec, 19,1916;

WAI1TER S. PORTER, F LEADVILLE," COLORADO.

VALVE-SPRING RELEASE.

Specification of Letters Patent.

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Patented Dec. 19, 1916.

Application filed July 14, 1916. Serial No. 109,337.

T 0 all whom it may concern:

Be it known that I, WALTER S. PORTER,

, a citizen of the United States, residing at Leadville, in the county of Lake and State of Colorado, haveinvented new and useful Improvements in Valve-Spring Releases, of which the following is a specification.

This invention relates toa valve spring whole to be adjusted to suit engines of different sizes and types thereby rendering the tool universally applicable to internal combustion motors of various kinds and types employing the ordinary puppet intake and exhaust valves. I

. With the above and other objects in View, the invention consists in the novel construction, combination and arrangement of parts, as herein described, illustrated and claimed.

In the accompanying drawings :Figure 1 is a fragmentary sectional view of an internal combustion engine, illustrating the valve spring release of this invention in its applied relation to one of the engine valves. Fig. 2 is a perspective view of the valve spring release detached.

The valve release contemplated in this invention embodies a main member or stock 1 which is .preferably square in cross section as shown in Fig. 2. This stock 1 may be of any desired length and is formed in one face thereof with notches which provide teeth 2 adapted to be engaged by a pawl or detent 3 which is connected by a pivot 4 to the longer arm of a lever d, the latter being connected by a pivot 6 to the stock 1. x

The device also comprises an arm 7 the inner end of which is enlarged and formed with a hole 8 of the same shape as the stock 1 in cross section. the hole 8 being adapted to receive the stock-snugly so that when any upward pressure is brought to bear against the extended portion of the arm 7, a clutching effect will immediately take place between the arm 7 and stock 1 thereby looking the arm to the stock. At the same; time when the arm 7 is not under tension, it may he slid and thereby adjusted longitudinally of the stock 1.

Slidingly mounted on and adjustable longispring 13 which encircles tudinally of arm 7 is a valve holding member 9 having itsupper end formed with an opening 10 to snugly receive the arm 7. The arm 7 is preferably square or rectangular in cross section, and the shape of the opening 10 corresponds therewith. At its lower extremity the member 9 is provided with a cushion face 11 shown in'the form of a disk' of leather, rubber, fiber or any other suitable material the same being adapted to rest directly upon and against the top of the valve body shown at 12 so 'asto prevent the valve from moving upthe compression of the valve 7 the valve stem 14 and which is-ordinarily held compressed by means of a pin or key 15. A slotted presser foot 16 is slidingly mounted on the shoulder arm 17 of the lever 5. The presser foot 16 is formed with a tubular shank or guiding portion 18 preferably square or rectangular in cross section so as to prevent any relative rotative movement between the presser foot and the short arm 17 of said lever. In order to limit the outward slidwardly during ing movement of the presser foot, the tubular shank thereof is formed with a guide slot to receive a stop 20 shown in the form of a pin extending from one face of theshort arm 17 of the lever. i

From the foregoing description taken in connection with the accompanying drawings and particularly Fig. 1, the operationof the device will now be understood. With the stock 1 extending in a substantially vertical direction at the valve side of the engine cylinder, the arm 7 is adjusted upward or downward on the stock until the head 11 while resting upon the valve, body 12 allows the slotted presser foot 16 to be inserted under the lower extremity of the valve closing spring 13. Then as the lever 5 is swung outwardly or away from the cylinder, the presser foot passing by the key or pin 15, bears against the lower extremity of the spring 15 or the cup which receives the same and there-' by compresses the spring 13 in an upward direction. The springis held thus compressed by means of the pawl or detent 3 which is carried by the lever 5 and which engages the teeth 2 of the stock 1. The operator may then readily remove the pin or key 15, after which he disengagesthe pawl 3 and allows the spring 13 to expand. The valve with its stem and also the spring may then a be readily removed for any desired purpose.

In replacing the valve and spring, the operation hereinabove described is repeated.

1 claim A valve spring release comprising a normally upright stock having a toothed face and of non-circular formation in cross section, an arm perpendicular to said stockand slidable longitudinally thereof but non-r0tatable in relation thereto, a valve holding member extending downwardly from said arm and slidable but non-rotatable in relaaoaoae tion to said arm, a lever pivotally connected to said stock and having a pawl adapted to engage the toothed face thereof, and a slotted valve spring compressing the presser 15.

WALTER eronrnn;

' confienio fi thin patent y be obtained for five centa each, by adrlreeaflna; the Cornflower o2 Patento,

, Washington, 19 6. 

